| A | B |
|---|
| atom | the smallest particle of an element that can exsist alone or in combination with other atoms |
| compounds | made up of two or more elements that cannot be seperated by physical means |
| elements | a substance that contains only one type of atom |
| heterogeneous mixture | different samples are not necessarily made up of exactly the same proportions of matter |
| homogeneous mixture | a mixture is the same throughout |
| law of conservation of mass | states that the total mass of products of a reaction is equal to the total mass of reactants |
| matter | anything that has mass and takes up space |
| mixtures | contain more than one kind of matter and can be seperated by physical means |
| molecule | the smallest particle of a compound that retains the properties of the compound |
| substances | cannot be seperated by physical means |
